docs: generate each subsystem's cordis surface into its own page; delete the flat catalogs

Rebuild of the region machinery (PR3) on the post-#904 Typert projection:
renderPageRegion/renderInheritedPage live in dsh-typert-generator beside the
projection; scripts/gen-cordis-catalog.ts owns the curated SERVICE_PAGE /
EVENT_SCOPE_PAGE / SERVICE_WALK_EXEMPTIONS / LINK_MAP partition (fail-loud in
both directions, with the independent Context-merge scan backstopping the
projection's blind spot), spliceRegion, and the guarded pair auto-record.
docs/cordis-catalog/ is deleted: the flat events/services catalogs dissolve
into per-page regions and docs/cordis-catalog/core moves to docs/cordis-api/
with the inherited tier as its own generated page. The partition absorbs the
post-regrouping surface: ctx.typert → invariants.md, ctx.directoryPicker →
workspace.md, skills/* events → skills.md, and the four launcher-provided tui
accessor values join the named exemptions.

docs/user/develop/framework/service.zh.md

@@ -140,7 +140,7 @@ export function apply(ctx: Context) {
 
 ## Harness 内置服务
 
-仓库会自动生成[服务目录](../../../cordis-catalog/services.md)，其中包含服务名、公开方法和源码位置。开发插件时应以该目录和服务的 TypeScript 接口为准，不要维护另一份静态清单。
+服务名、公开方法和源码位置由仓库自动生成到各服务的[子系统页面](../../../subsystems/core.md)。开发插件时应以这些生成区块和服务接口的 TypeScript 类型为准，不要复制一份静态清单。
 
 ## 下一步